Choosing a UV-Vis cuvette material is primarily a decision between three quartz grades — JGS1 (170–2,500 nm, deep-UV optimized), JGS2 (220–2,500 nm, the standard UV-Vis grade), and JGS3 (260–3,500 nm, NIR optimized) — plus optical glass (350–2,000 nm) and disposable plastic (visible only, single-use). Match the lower wavelength of your measurement to the material’s UV
Quartz cuvette compatibility is controlled by three instrument-specific parameters: the Z-dimension (beam height above the cell holder base, typically 8.5 mm or 15 mm), the body footprint (standard 12.5 × 12.5 mm or oversized 20 × 20 mm), and the path length declared by the instrument’s calibration. A 10 mm path cell from one vendor
UV-Vis spectrophotometry is the quantitative measurement of how much ultraviolet and visible light (190–800 nm) a sample absorbs, used in pharmaceutical QC, biochemistry, environmental monitoring, food analysis, and materials science. The method relies on the Beer-Lambert law (A = ε · c · L), where absorbance is proportional to analyte concentration and optical path length.
The quartz-vs-glass cuvette decision is primarily a wavelength question: quartz transmits 170–3,500 nm and is mandatory for any measurement below 320 nm (the UV cutoff of optical glass); optical glass transmits 350–2,000 nm and is cheaper for visible-only work. A secondary factor is chemical compatibility — quartz handles concentrated acids and 1,000 °C+ thermal shock
From heat resistant Pyrex to PVB laminated safety windshields, glass is available in many forms. Some of the materials commonly referred to as glasses are actually plastic or plastic-glass mixes, although the term glass does not explicitly indicate a particular chemical composition. The term can describe any number of hard, amorphous, inorganic, and uniform solids
Glass Glass is an amorphous (non-crystalline) solid material. Glasses are typically brittle and optically transparent. The most familiar type of glass, used for centuries in windows and drinking vessels, is soda-lime glass, composed of about 75% silica (SiO2) with the addition of sodium oxide (Na2O) from soda ash, lime (CaO), and several minor additives. Optical
Mainly used in laboratories and classrooms, test tubes are vessels that hold and mix or store materials for use in experiments and research. There are several different types of test tubes available, and they may be made from varying materials. Glass is the classic and most common test tube material. It’s heat- and chemical-resistant. It’s
When it comes to labware should you choose glass or plastic? Consider this. According to Lab Training: “Selecting laboratory ware can become a task in itself, especially when you are not aware of different available alternatives. “One of the major confusions people face while selecting labware products is whether to choose glass options or plastic
Have you ever wondered the properties of silica glass? Consider this. According to Nautre.com: “Silica glass has been shown in numerous studies to possess significant capacity for permanent densification under pressure at different temperatures to form high density amorphous (HDA) silica. However, it is unknown to what extent the processes leading to irreversible densification of
Curious about the different types of tubes that are used in science labs? Consider this. According to Science Times: “A tube is one of the most common laboratory equipment. Lab tubes are normally found in science labs in their special-purpose racks. Labs use them to store conduct and materials to be used for experiment and
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